Pin doesn't read it as Logic High though multimeter reads 3.2V

[user_4081126]

I am working with Psoc 6 CYBLE-416045-02. I have rigged a voltage divider circuit using two resistors on breadboard and  using a jumper wire, i have connected it to one of the pins on PSOC. Though the multimeter reads 3.2V, the pin doesnt read it as Logic

[Ekta_N]

Hello,

You can check for the following possibilities:

Check if the ground of voltage divider same as the ground of PSoC

Check if you are reading the correct pin of the PSoC.

Regards

Ekta

[user_4081126]

Yes! I have checked all that you have mentioned.

My observations are :

1. When I give vcc to one of the pins and read , it reads LOGIC HIGH

2.When I connect vcc to pin through a resistance or from a voltage divider, the pin doesn't read it as logic HIGH though the voltage in the pin reads more than the threshold corresponding to CMOS/TTL.

3.Does the resistor in the the buffer cause this? Because in design modus, I have selected 'strong input drive ,buffer on'.

If any changes are to be made in Design Modus, please tell!

[Ekta_N · Accepted solution]

High Impedance (Hi-Z)  state is recommended for analog and digital inputs inputs. For digital input the input buffer is enabled while for analog input buffer is disabled to reduce the crowbar currents.

Please refer to page 168 of PSoC 6 TRM:

https://www.cypress.com/file/399201/download

Regards

Ekta

[user_4081126]

THANKS A LOT!! This circuit was a part of a bigger circuit.It helped!!